board: kontron: add sl28 support
Add basic support for the Kontron SMARC-sAL28 board. This includes just
the bare minimum to be able to bring up the board and boot linux.
For now, the Single and Dual PHY variant is supported. Other variants
will fall back to the basic variant.
In particular, there is no watchdog support for now. This means that you
have to disable the default watchdog, otherwise you'll end up in the
recovery bootloader. See the board README for details.
Signed-off-by: Michael Walle <michael@walle.cc>
Reviewed-by: Tom Rini <trini@konsulko.com>
Tested-by: Heiko Thiery <heiko.thiery@gmail.com>
Reviewed-by: Priyanka Jain <priyanka.jain@nxp.com>
diff --git a/arch/arm/dts/fsl-ls1028a-kontron-sl28-var4.dts b/arch/arm/dts/fsl-ls1028a-kontron-sl28-var4.dts
new file mode 100644
index 0000000..33b1630
--- /dev/null
+++ b/arch/arm/dts/fsl-ls1028a-kontron-sl28-var4.dts
@@ -0,0 +1,48 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Device Tree file for the Kontron SMARC-sAL28 board.
+ *
+ * This is for the network variant 4 which has two ethernet ports. It
+ * extends the base and provides one more port connected via RGMII.
+ *
+ * Copyright (C) 2019 Michael Walle <michael@walle.cc>
+ *
+ */
+
+/dts-v1/;
+#include "fsl-ls1028a-kontron-sl28.dts"
+#include <dt-bindings/net/qca-ar803x.h>
+
+/ {
+ model = "Kontron SMARC-sAL28 (Dual PHY)";
+ compatible = "kontron,sl28-var4", "kontron,sl28", "fsl,ls1028a";
+};
+
+&enetc1 {
+ phy-handle = <&phy1>;
+ phy-mode = "rgmii-id";
+ status = "okay";
+};
+
+&mdio0 {
+ phy1: ethernet-phy@4 {
+ reg = <0x4>;
+ eee-broken-1000t;
+ eee-broken-100tx;
+
+ qca,clk-out-frequency = <125000000>;
+ qca,clk-out-strength = <AR803X_STRENGTH_FULL>;
+
+ vddio-supply = <&vddh>;
+
+ vddio: vddio-regulator {
+ regulator-name = "VDDIO";
+ regulator-min-microvolt = <1800000>;
+ regulator-max-microvolt = <1800000>;
+ };
+
+ vddh: vddh-regulator {
+ regulator-name = "VDDH";
+ };
+ };
+};